Place it in an airtight container, before closing the lid put some "Activated Carbon" in an open container and place that in with the quilt then put the lid on.
It has worked for me. I ran a post on it and you can read the suggestions in case you need some of them at a different time but for this one I would do the Activated Carbon.
You get it at the pet store or pet store section of Wal-mart in the fish supplies. It is about $5 for a large jar.
http://www.quiltingboard.com/search....+the+smell+out